點數對評定量表信度與效度影響之模擬研究（II）
Date Issued
2002
Date
2002
Author(s)
DOI
902413H002022
Abstract
The research examined the effects of
scale properties and respondent
characteristics on criterion-related validity of
Likert-type rating scales by Monte Carlo
method. The independent variables
manipulated include correlation between true
score of items from the scale and the
criterion, the number of response categories,
the inter-item covariance, the number of
items, respondents’ judgment accuracy (or
reliability of individual item), and the
distribution of scores of the rating scales.
The results suggested that inter-item
covariance, number of items, and judgment
accuracy affected criterion-related validity.
Number of response categories and score
distributions had little effect on validity
coefficient. When the correlation between
true scores of test and criterion is low, it is
unlikely to increase criterion-related validity
by manipulations of scale design.
Subjects
rating scales
Likert-type scales
number of response categories
item distributions
criterion-related validity
correlation coefficient
Publisher
臺北市：國立臺灣大學心理學系暨研究所
Type
report
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